Novel synthesis of 5,11-dihydro-6<i>H</i>-pyrido[2,3-<i>b</i>]-[1,4]benzodiazepin-6-ones and related studies
作者:M. Oklobdžija、G. Comisso、E. Decorte、T. Fajdiga、G. Gratton、F. Moimas、R. Toso、V. Šunjić
DOI:10.1002/jhet.5570200535
日期:1983.9
5,11-Dihydro-6H-pyrido[2,3-6][1,4]benzodiazepin-6-one (1), a basic intermediate in the preparation of 11-α-aminoacetyl derivatives with important biological activities, has been obtained by a three-step synthesis starting from easily available isatoic anhydride and anhydro ornithine. Some model cyclisation reactions leading to 5-member ring derivatives 10 and 12 instead of 7-member ring analogues of
5,11-二氢-6 H-吡啶基[2,3-6] [1,4]苯并二氮杂-1-酮(1)是制备具有重要生物学活性的11-α-氨基乙酰基衍生物的基本中间体,具有通过三步合成法从易获得的等角酸酐和脱水鸟氨酸开始获得苯乙胺。据报道一些模型环化反应导致5元环衍生物10和12,而不是7元环类似物1。1的四氢同类物(即化合物4)轻松转化为19,实际上代表5转化为4时的四面体中间体,已注意到。描述了将19进一步重新排列为螺化合物20,并将其返回5。